716 



PROTOZOOLOGY 



lindrical, ovoid or flask-shaped; some with head-like prolongation; 

 cytopharynx with trichites; cilia long at anterior end; fresh or salt 

 water. Several species. 



E. californicus Kahl. 120-130ju long; elongate ovoid to nearly 

 cylindrical; not distinctly flattened; macro nucleus horseshoe-like, 

 with a large micronucleus; in mosses; California. 



Genus Trachelophyllum Claparede and Lachmann. Elongate; flat- 

 tened; flexible, ribbon-like; anterior end neck-like and tip truncate; 

 cytopharynx narrow, round in cross-section, with trichocysts; ciliary 

 rows widely apart; 2 macro nuclei, each with a micronucleus; con- 

 tractile vacuole terminal; fresh or salt water. Several species. 



T. clavatum Stokes (Fig. 305, i). About 200/x long; fresh water. 



Genus Ileonema Stokes (Monomastix Roux). Body flattened; 

 flask-shaped; somewhat similar to Trachelophyllum, but there is a 

 remarkable flagellum-like process extending from anterior end; 

 cytopharynx with trichocysts; fresh water. 



I. dispar S. (Fig. 306, 6). Highly contractile; anterior flagellum 

 half body length, whose basal portion spirally furrowed; cytostome 



f I 





Fig. 306. a, Rhopalophrya salina, X1040 (Kirby); b, Ileonema dispar, 

 X190 (Stokes); c, /. ciliata, X800 (Roux); d, e, Trachelocerca phaenicop- 

 terus (Kahl) (d, whole organism, X120; e, anterior end, X260); f, g, T, 

 subviridis (Nolan d) (f, whole organism, XI 55; g, the nucleus, X480). 



